I would imagine any discussion relevant to projects on Github would be better done on Github. If there are a lot of people who want to lurk on a subforum here instead of having to visit the site where any code would actually be anyway, then I don't see why simple threads wouldn't be adequate. I'm curious what others think too though.

When we exceed 5-10 threads on a given topic, and have a prospect of many new threads coming, then it makes sense to think about an own category for that topic. Right now, I don't see this for GitHub, even though I would like more activity there. One dedicated thread will suffice.